Template



VJlmv.: l2.5, 1935.

c. B. scHAFERV' 21,006,183

TEMPLATE Filed NOV. 13, 1930 FW Uf INVENTOR ATTORNEY Patented June 25,1935 @Unirse stares Tempera Conrad E. Schafer, Toledo, Ohio, assgnor toLibbey-Owens-Ford Glass Company, Toledo, Qhio,

a corporation of Ohio Application November 13, 1930, Serial No. 495,364

2 Claims. (Cl. 33-76) The present invention relates to apparatus :foruse in the cutting of glass sheets yor plates or other sheet material,and more particularly to the provision of an improved form of template.

In the cutting of glass sheets or plates and specially 'the cutting ofglass for use in automobile windshields, windows, and the like, anexceptionally accurate cut is desirable, since in the event the sheet isoversize, it .requires too much grinding to remove the excess material,while on the other hand, too small a sheet is wasted. Ordinarily, thecutting' or" glass sheets for this purpose is effected by iirst placinga. template oi the desired shape and size upon the glass sheet to beout, afterl which scoring tool is drawn over and in contact with thevglass, being heldin engagement with the outer edges oi the template andguided thereby. .Lifter scoring, the template is removed and the glassbroken along the score lines. The cuttingtool ord'marily used is of thehand operated type having a diamond or a rotatable steel cutting wheel.With such a type oi cutter, however, if the cutter is not heldabsolutely straight or perpendicular with respect to the glass sheet,the said sheet will be cut either slightly larger or slightly smallerthan desired. As pointed out above, in the event the sheet is oversize,it must be ground down, whereas on the other hand, ii the sheet is cuttoo small, it is entirely wasted. This grinding and waste can be avoidedby the obtaining of a close accurate out. f

The aim and principal object of the present invention is the provisionof means for facilitating and expediting the cutting of glass sheets orplates by the use oi which an accurate cutting thereof to the desiredshape and size may be assured and wherein the accuracy of the cut willnot be dependnt wholly upon the skill of the operator. y

Another object of the invention is the provision of means of the abovecharacter consisting of a novel form o template constructed topositively maintain the scoring tool straight or perpendicular withrespect to the glass sheet at all times during the cutting operation sothat the said sheet can be rapidly and efficiently out to the desiredpredetermined size and shape,

iereby avoiding grinding of the sheet which would be necessitated if thesheet were oversize and likewise avoiding waste incident to the cuttingof the sheet too small.

Gther objects vand advantages of the invention will become more apparentduring the course which may be either in the form of a diamond or of thefollowing description when takenin connection with the accompanyingdrawing.r

In the drawing wherein like numerals are employedv to designate likeparts throughout the saine,

Fig. l is a top plan view of apparatus providedk by the presentinvention, .Y

Fig. 2 is a section taken substantially on line 2--2 .of Fig. l., and

Fig. 3 is a section taken substantially on line` 3-3 of Fig. l. k

Referring now to the drawing, i designates in its entirety a table orthe like for supporting the glass sheet to be out, said table beingprovided with a iiat horizontal top 5 upon which the glassk sheet isadapted to be placed, said top being supported by vertical legs t.Secured to the top of the table and extending longitudinally thereofadjacent its rear edge is a strip l to which is connected, by means oi'hinges 8, the improved L template member provided by the presentinvention and which is Adesignated in its entirety by the numeral e. K

The template member il, which may be of 'anyv preferred material, isIiat and substantially rec- :5 tangular. The template member is providedadjacent the opposite ends thereof withY spaced slots it and ll whichdivide the same into a pattern section l2 of the desired shape and sizeof sheet to be out and the end members i3 and i4 which preferablyproject slightly beyond the pattern section. As here sli-own, the slotsI9 and Il are open at their forward ends and are straight and parallelwith one another, while the front edge l5 of the pattern section iscurved outwardly. 5,5 However, the pattern section may take any desiredshape and the slo-ts lil and Il need not be parallel with one another,nor need the front edge l5 be curved, depending upon the shape of sheetto be cut. The inner edges of the slots I0 and ll define the end edgesof the pattern section l2.

The cutting or scoring of the glass sheet is adapted to be accomplishedby the use cfa scoring tool of the hand operated type such as is illus-45 trated in Fig. 3. As shown, this cutting tool comprises asubstantially rectangular body porti-on i6 carrying at its upper end ahandle I1 and at its lower end the scoring or cutting element I8 a'rotatable steel wheel. In practice, the body portion l5 of the scoringtoolv is adapted to be of such a size as to snugly rit within the slotsl0 and l I so that when the tool is positioned within the said slots, itwill be maintained in a vertical Y position and will be prevented frominclining forward ledge of strip Vi either to one side or the other. Y

When it is desired to out a glass sheetV or plate,

f theV template member-9 is` first swung upwardly i to its broken lineposition indicated in Fig. 2 so as to permit a glass sheet lllv to belaid upon the tabletop 5 and this sheet is positioned so that the rearlongitudinal edge thereof will abut the the sheet projecting at its endsbeyond slots il! and l l and also forwardly of the curved l5. The.template is then lowered onto the glass and, in order to hold the saidtemplate steady during cutting, the end portions I3 and le thereofareprovided adjacent their forward ends with apertures which receivetherein stationary pins t carried by the top of the table. Y Y v Whenthe glass kand template have'been posin tioned in the manner abovedescribed, an operator Y glass to score the same. 25

pointed out above, the scoring tool is adapted to to one side or YbeV ofsuch -a size as to fit snugly within the slots Il] and Il so that itwill be maintained in a vertical position and'prevent'ed from incliningeither the other during the scoring kof the glass. Thusfthe cutting toolwill be vpositively maintained in a straight vertical position so thatthe sheet out will be of the desired size Y Y In the cutting of glassfor automobile windshields, windows, and the like, it is particularlyessential that the width of the sheet come within very close limits, dueto the sliding of the glass within the holding frames, For instance, adoor or window light may be a little oversize as regards height Withoutbeing objectionable, yet the same oversize in width would necessitater agrind'- ing of the sheet to remove the excess material.

Likewise, if the sheet is a little undersize as regards height, it maynot be objectionable, while rejection of the sheet. However, byproviding a template Amember of the character above ,Ydescribed, a closeaccurate cut, particularly as regards the width of the sheet, isassured.r Moreover, the obtaining of this close accurate'out isV notdependent wholly upon the skill of the operator in,maintaining thecutteristraight since the cutter is positively maintained in a straightvertical position by the template member. Y

It is to be understood that the form of the ini the same undersize inWidth might result in the vention herewith shown and described'is to beY taken as the preferred embodiment of the same, and that variouschanges in the shape, size and arrangement of parts may be resorted toWithout departing from the vspirit of the invention or the scope'of thesubjolned claims.

I claim: Y Y

1. In apparatus for use in the cutting of 'glass sheets or plates, atemplate member adapted to rest upon the sheet to be cut, said templatemember having a pattern section of theshape and size ofV sheet to be cutand being further provided with slots, the'inner edges of which definethe outer edges of said pattern section, said slots be*-Y ing providedvfor the receptionfof a scoring tool which is adapted to fit snuglytherein.

2. In apparatus for use in the cutting of glass sheets or plates, atemplate member adapted toV rest upon the sheet to be out, said templatemem# same into a central pattern section of the shape and size of Vsheetto be cut and end portions dislposed outwardly of Vthe pattern section,said slotsY being open at their forward ends and being provided for thereception of a scoring tool which is adapted toV t snugly therein.

CONRAD B.Y SCHAFER.

l ber being provided with spaced slots dividing the'Y Y,

